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Debugging iframes with Chrome developer tools
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In the Developer Tools in Chrome, there is a bar along the top, called the Execution Context Selector (h/t felipe-sabino), just under the Elements, Network, Sources... tabs, that changes depending on the context of the current tab. When in the Console tab there is a dropdown in that bar t...
What reason is there to use null instead of undefined in JavaScript?
...t undefined is always preferable and serves the same purpose programmatically. What are some practical reasons to use null instead of undefined ?
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How do I check if a number is positive or negative in C#?
...rSimon Fischer
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Find a pair of elements from an array whose sum equals a given number
Given array of n integers and given a number X, find all the unique pairs of elements (a,b), whose summation is equal to X.
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Reading header data in Ruby on Rails
..."Cookie"]
New way:
request.headers["HTTP_COOKIE"]
To get a Hash with all headers of the request.
request.headers
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Vagrant error : Failed to mount folders in Linux guest
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The plugin vagrant-vbguest solved my problem:
$ vagrant plugin install vagrant-vbguest
Output:
$ vagrant reload
==> default: Attempting graceful shutdown of VM...
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==> default: Machine booted and ready!
GuestAdditions 4.3.12 running --- OK.
==> default: Checking for guest addi...
Elegant solution to duplicate, const and non-const, getters? [duplicate]
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I recall from one of the Effective C++ books that the way to do it is to implement the non-const version by casting away the const from the other function.
It's not particularly pretty, but it is safe. Since the member function c...
How to disable anchor “jump” when loading a page?
...bably don't need it if it's in jQuery's $(function() { anyway. You don't really need the location.hash, but it's nice leaving it in so browsers may not have to do anything. Also reminds you what the scrollTo is for!
– dave1010
Sep 7 '10 at 13:50
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MYSQL Truncated incorrect DOUBLE value
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Really glad I found this answer before throwing the computer in to a wall
– rbennell
Aug 31 '17 at 16:53
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Java Synchronized Block for .class
What does this java code mean? Will it gain lock on all objects of MyClass ?
4 Answers
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